🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`mx4.rubygem.org`

DNSSEC	⚠️ Not signed
A	13.248.169.48^{🇺🇸 Amazon13.248.160.0/20}
		PTR	`a904c694c05102f30.awsglobalaccelerator.com`
A	76.223.54.146^{🇺🇸 Amazon76.223.48.0/20}
NS	`ns1.dan.com` ⭐ ⚠️ Not in parent delegation
		A	2603:5:2125::43^{🇺🇸 GODADDY-DNS2603:5:2120::/44}
			PTR	`ns1.dan.com`
		A	97.74.98.67^{🇺🇸 GODADDY-DNS97.74.98.0/23}
			PTR	`ns1.dan.com`
NS	`ns2.dan.com` ⚠️ Not in parent delegation
		A	2603:5:2225::43^{🇺🇸 GODADDY-DNS2603:5:2220::/44}
			PTR	`ns2.dan.com`
		A	173.201.66.67^{🇺🇸 GODADDY-DNS173.201.66.0/23}
			PTR	`ns2.dan.com`
SOA	`ns1.dan.com`dns@jomax.net 2025-10-01 #0

`rubygem.org`

	DNSSEC	⚠️ Not signed
	A	13.248.169.48^{🇺🇸 Amazon13.248.160.0/20}
	A	76.223.54.146^{🇺🇸 Amazon76.223.48.0/20}
	NS	`ns1.dan.com` ⭐ ⚠️ Not in parent delegation
	NS	`ns1.undeveloped.com` ⚠️ Not in zone NS records
	NS	`ns2.dan.com` ⚠️ Not in parent delegation
	NS	`ns2.undeveloped.com` ⚠️ Not in zone NS records
	SOA	`ns1.dan.com`dns@jomax.net 2025-10-01 #0

WOT: SAFE (49/100)
WOT: SAFE (14/100)

Previously MX for

rubygem.org

Same first word

mx4.org

mx4.kinghost.net

mx4.net

mx4.fitness

mx4.ru

mx4.us

mx4.in-berlin.de

mx4.gov.ru

mx4.cloudaccess.net

mx4.bet

mx4.gouv.ci

mx4.biz

mx4.myshopify.com

mx4.ch

mx4.pb.gov.br

mx4.me

mx4.studio

mx4.com

mx4.de

mx4.uni5.net

mx4.pl

mx4.dk

mx4.vg

mx4.ca

mx4.fr

mx4.cn

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Previous names

Next names

DNS History

5 records (4 active, 1 former)

●NSns1.dan.com2026-08-28 → 2026-08-28 · 1 obs

● 2026-08-28 08:18:54

●NSns2.dan.com2026-08-28 → 2026-08-28 · 1 obs

● 2026-08-28 08:18:54

●A13.248.169.482026-08-28 → 2026-08-28 · 2 obs

○ 2016-06-25 19:51:34
● 2026-08-28 08:18:54

○A54.225.100.182015-08-07 → 2016-06-25 · 3 obs

● 2015-08-07 06:34:10
● 2016-06-25 19:51:34
○ 2026-08-28 08:18:54

●A76.223.54.1462026-08-28 → 2026-08-28 · 2 obs

○ 2016-06-25 19:51:34
● 2026-08-28 08:18:54

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org	-
rubygem.org	ns1.undeveloped.com, ns2.undeveloped.com	-

✅ Authoritative Response

Server:173.201.66.67

NS records: ns1.undeveloped.com, ns2.undeveloped.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for rubygem.org (unsigned zone)

⏱️ Timing

Total: 249ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`13.248.169.48, 76.223.54.146`
NS	2	`ns1.dan.com, ns2.dan.com`
SOA	1	`ns1.dan.com dns.jomax.net`

Analysis

IP Addresses

mx4.rubygem.org points to the IP addresses 13.248.169.48 and 76.223.54.146

Additional host names — niwale.com, freezingdoge.xyz, diagramlayer.xyz and two others — share IP numbers with mx4.rubygem.org.

Name Servers

mx4.rubygem.org is served by two delegated name servers, ns1.dan.com and ns2.dan.com.

mx4.rubygem.org shares its name server setup with other domains, including miplus.tech, linca.com, indyzone.com and two others.

There is at least partial name server overlap between mx4.rubygem.org and other domains — domainauctions.nyc, spin.la, cswear.com and two more among them.

These name servers frequently co-occur with the name servers ns1.undeveloped.com and ns2.undeveloped.com.

Each of the two host names carries two IP addresses: ns1.dan.com points to 97.74.98.67 and 2603:5:2125::43, and ns2.dan.com points to 173.201.66.67 and 2603:5:2225::43.

mx4.rubygem.org - dns.ninja

mx4.rubygem.org

rubygem.org